PPT-Prokaryotes

Eubacteria amp Archarbacteria Prokaryotes Unicellular organisms that lack a nucleus Prokaryotes are identified by characteristics such as shape the chemical nature of their cell walls the way they move and the way they obtain energy. GTAC. Learning Outcomes. Students recognise that there are different levels of classification – the largest being the five kingdoms which are based on cell structure.. Distinguishing plant cells from animal or fungal cells.. Cell Theory. Every living organism consists of one or more cells.. The cell is the structural and functional unit of life.. All living cells arise by division of preexisting cells.. Cells contain hereditary material, which they pass on to their offspring during division.. Prokaryotic . Structure. size1-5. m. m (resolution of the human eye ~750. m. m). . Cell wall. . main component is peptidoglycan (modified sugar polymers). . can be further differentiated performing a gram stain . Single-celled organisms. Very tiny. Cannot be seen without a microscope. Our microscopes are not powerful enough. Lack a nucleus and most other organelles. Most numerous organisms on Earth. Extremely important organisms.. Cellular organisms. In one of two domains: . Archaea. and Eubacteria. Generally smaller than eukaryotes. Most are unicellular, some form colonies or filaments. No membrane-enclosed organelles. Ribosomes are located in the cytoplasm. Biology Unit 04 Lesson 01. Prokaryotes – What are they?. Cells (usually single-celled) with no nucleus. Have no specialized organelles. Usually have: cell wall, cell membrane, ribosomes, genetic material, cytoplasm, and flagella or cilia. 0. PROKARYOTES. 16.7. Prokaryotes have inhabited Earth for billions of years. Prokaryotes are the oldest life-forms. And remain the most numerous and widespread organisms . Colorized SEM 650. . . GET READY TO USE THEM. STAND UP NOW . WITH CLICKERS IN HAND. WHEN I GIVE THE SIGNAL,. HOLD YOUR BREATH AS LONG AS YOU CAN.. I will count the time off.. When you can’t hold your breath any longer,. microscopic single celled organisms. collective biomass – . 10x of all eukaryotes!!!!!. vast genetic diversity among members. physical diversity. shapes: . spheres (. coccus. ), rods (bacilli) and spirals. Study Material for. . . B.Sc. Part II. . Botany . Hons. .. . . Paper IV. . Dr. Pushpanjali Khare. Sr. . What makes these two cell classes different?. Cells. The . cell. is the smallest unit of life in the universe.. ALL cells have two things in common:. They have . cell membranes. , which are barriers that separate the inside of a cell from the outside.. Warm Up- 8/21. What level of organization is this picture an example of?. Good Things. Levels of Organization Card Sort. Lab Tables (4 group members). 5 Minutes Max. Levels of Organization Matching. 5 Minutes. microbiology. Lecture-9. Microbial cell structure. Prokaryotes-2 . 1. Domains of living cells. . Principles of microbial cell structure . Elements of Microbial cell Structure. Eukaryotes. . Prokaryotes & chemistry of cellular components . Classifying Prokaryotes. The smallest and most abundant microorganisms on Earth are . prokaryotes. —unicellular organisms that lack a nucleus. . Prokaryotes have DNA, like all other cells, but their DNA is not found in a membrane-bound nuclear envelope as it is in eukaryotes. Prokaryote DNA is located in the cytoplasm. .